NPPES file of Aug 9, 2026

William Dae Bishop, D.O.

Anatomic Pathology & Clinical Pathology Physician · Arcadia, CA

William Dae Bishop, D.O. is an anatomic pathology & clinical pathology physician with a practice address in Arcadia, California, and NPI 1821268533, issued on Mar 10, 2008. Check the license (California 20A10631, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1821268533
Name
William Dae Bishop
Credential
D.O.
Primary taxonomy
Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
License number
20A10631 CA
Self-reported in NPPES; status is on the state search
Practice location
300 W Huntington Dr, Arcadia, CA 91007
Phone
(626) 574-3488
Enumerated
Mar 10, 2008
Record last updated
Jul 8, 2014 (not updated in 12 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20121121000442); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 300 W Huntington Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Katherine Agron, NPFamily Nurse Practitioner1538685334
  2. Raha Akhavan, M.D.Anesthesiology Physician1477577351
  3. Vincent Antosz, MDInternal Medicine Physician1831150135
  4. Loren Ayres, M.D.Anatomic Pathology & Clinical Pathology Physician1184693301
  5. Apryl Jann Bacalso, PTPhysical Therapist1124525340
  6. Rahtna Banerjee, M.D.Anesthesiology Physician1033430855

Verify William Dae Bishop in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 20A10631
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score80.9
  2. Costnot scored (reweighted)
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. Pathology Associates OF ArcadiaArcadia, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

William Dae Bishop among 1,554 anatomic pathology & clinical pathology physician records in California

William Dae Bishop, D.O. is one of 1,554 anatomic pathology & clinical pathology physician records with a practice address in California. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 57% of them.

  • NPI issued2008 · 57% of these records are older, 38% newer
  • In a Medicare fileYes · 65% of these records are
  • In the CMS Doctors and Clinicians fileYes · 57% of these records are
  • Graduated2007 · median 2003 among the 891 with a school on file
  • Record last updated2014 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0102X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Anatomic Pathology & Clinical Pathology Physician providers in California

There are 1,554 anatomic pathology & clinical pathology physician records in California.

The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes

  1. Loren Ayres, M.D.Arcadia, CA 910071184693301
  2. Roger Der, M.D.Arcadia, CA 910071558355156
  3. Rania Bakkar, MDDuarte, CA 910101962613257
  4. Karen Chang, MDDuarte, CA 910101518924398
  5. Peiguo Chu, MDDuarte, CA 910101912964974
  6. Fang Fan, MD, PHDDuarte, CA 910101316058415
  7. Kate Grimm, M.D.Duarte, CA 910101487840419
  8. Stanley Hamilton, M.D.Duarte, CA 910101730275637

Common questions

What is William Dae Bishop, D.O.'s NPI number?

William Dae Bishop, D.O.'s National Provider Identifier (NPI) is 1821268533, issued on Mar 10, 2008. An NPI identifies a provider in billing; it is not a license.

Where is William Dae Bishop, D.O. located?

The NPPES record lists a practice address at 300 W Huntington Dr, Arcadia, CA, 91007. Phone: (626) 574-3488. Providers update this record themselves, so call before visiting.

How can I verify William Dae Bishop, D.O.'s license?

NPPES lists California license number 20A10631, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

What is William Dae Bishop, D.O.'s MIPS final score?

The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.